Replace realesrgan to the Stable Diffusion latent upscaler. Remove unnecessary libraries.

Makefile

@@ -3,12 +3,6 @@
 app:
 	cd ./app && modal deploy __main__.py
 
-# `--upscaler` is a name of upscaler you want to use.
-# You can use upscalers the below:
-#   - `RealESRGAN_x4plus`
-#   - `RealESRNet_x4plus`
-#   - `RealESRGAN_x4plus_anime_6B`
-#   - `RealESRGAN_x2plus`
 img_by_sd15_txt2img:
 	cd ./cmd && modal run sd15_txt2img.py \
 	--prompt "a photograph of an astronaut riding a horse" \
@@ -17,8 +11,7 @@ img_by_sd15_txt2img:
 	--width 768 \
 	--samples 1 \
 	--steps 30 \
-	--upscaler "RealESRGAN_x2plus" \
-	--use-face-enhancer "False" \
+	--use-upscaler "True" \
 	--fix-by-controlnet-tile "True" \
 	--output-format "avif"
 
@@ -28,8 +21,7 @@ img_by_sd15_img2img:
 	--n-prompt "" \
 	--samples 1 \
 	--steps 30 \
-	--upscaler "RealESRGAN_x2plus" \
-	--use-face-enhancer "False" \
+	--use-upscaler "True" \
 	--fix-by-controlnet-tile "True" \
 	--output-format "avif" \
 	--base-image-url "https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/cat.png"
@@ -40,5 +32,4 @@ img_by_sdxl_txt2img:
 	--height 1024 \
 	--width 1024 \
 	--samples 1 \
-	--upscaler "RealESRGAN_x2plus" \
 	--output-format "avif"